Spring-bridge.



PAT-ENTBD' MAY 5, 1908.

G. A. BAUER. SPRING BRIDGE. v APPLIQATIQN FILED DBO. 26,-1907.

m M eases UNITED STATES rapanrorrrca.

GUSTAV A. BADER, OF ROCHESTER, NEW YORK, ASSIGNOR TO E. KIRSTEIN SONS COMPANY,

OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

SPRING-BRID GE To all whom it may concern:

Be it known that I, GUSTAV A. BADER, of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Spring- Bridges; andI do hereby declare the follow-' ing to be a full, clear, and exact description .of the same, reference being had to the acresiliency and at the same time will permit of an adjustment for the pupilary distance without aflecting the operation of the guards.

'To these and other ends the invention consists in certain improvements and combinations of parts. all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification.

In the drawings: Figure 1 represents an enlarged front view of a pair of eyeglasses constructed in accordance with this inven tion; Fig. 2 represents a top view of the eyeglasses; Fig. 3 a central transverse section through the eyeglas es; and Fig. 4 represents a perspective view of the bridge; and Fig. 5 represents one of the lenses moved to separate the guards.

Similar reference numerals in the several figures indicate similar parts.

In the embodiment of the invention herein shown A indicates the glasses or lenses, B the nose guards and C the lens attaching devices, all ofthese parts being of any suitable construction, but it is preferred that the lens attaching devices have the posts 1 and the vertically arranged seats 2 at their -nner ends.

The spring bridge is formed near each end with two horizontal loops arranged one over the other, and preferably 0 )ening forwardly, for by this arrangement, w en the lenses are moved to separate the nose guards the upper loop is closed and the lower loop is opened, thus causing one to act on the ot [er and prevent either from weakening. pose of rendering the loops inconspicuous and at the same time of giving greater length F or the pur Specification of Letters Patent.

Application filed December 26, 1907. Serial Noi 408,076.

Patented May 5, 1908.

to the arm which connects a pair, one of each pair is arranged above the lens attaching device, while the other. is arranged below.

In a preferred embodiment the bridge is formed from a piece of flat stock having uniform width if desired, the stock being bent widthwise between its ends to form the bridging portion 3, outwardly at 4 and forwardly'at 5 to form the upper horizontal loops. From each upper horizontal loop a bend downwardly edgewise of the stock provides a vertical ortion 6 which connects the upper loop to the lower loop formed in the present instance by bending the stock again edgewise of the stock and rearwardly at 7 to a point vertically below the bend 5, thence inwardly at 8 and thence forwardly at 9, this forwardly extending portion of the lower loop being provided with an attaching arm when the lenses are moved to a certain distance to separate the guards the connection 6 engages the proximate lens attaching device in the manner shown in Fig. 4, and prevents the lower loop spreading too far.

While, of course, I am not to be limited to making the bridge of flat stock, yet this has special advantages when bent in the manner described, as the widthwise bends give greater resiliency in the horizontal direction and rigidity in a vertical direction, and the edgewise loops which pass about the lens attaching devlces are not conspicuous when viewed from the front, in side view also being inconspicuous, owing to the fact that they sngglly hug the reduced posts 1. I

e horizontal arrangement of the loops' one above and one below'the lens attaching device permits the use of a bridge of reater length with a decreased amount visible from the front and the greater length of the bridge, in addition to giving greater resiliency, gives greater adjustment between'the lenses for changing the pupilary distance of the eye glasses.

I claim as my invention:

1. The combination with a pair of' lenses, of a spring bridge connecting t rein, having a a bridging portion and a pair of forwardly 1 bridging portion and a pair of forwardly opening loops arranged at each end of the bridging portion, one over the other, in vertical planes beyond said. bridging portion.

3. A. spring bridge having a bridging portion and a pair of forwardly opening hori-- zontal loops at each end, arranged in vertical planes beyond the bridging portion.-

4. A spring bridge having a bridging portion and apair offorwardly opening horizontal loops at each end one arranged above the other, in vertical planes beyond the bridging portion.

5. The combination with apair of lens attaching devices, of a spring bridge connecting them having horizontal loops arranged over and beneath the lens attaching devices.

6. The combination with a pair of lens attaching devices, of a spring brid e connecting them having a pair of forwardly openin horizontal loops at each end, one arrange 7 over and the other arranged beneath the proximate lens attaching device.

7. A spring bridge having a bridging portion, and at each end an outward bend, a forward bend, a downward bend, a rearward bend, an inward bend and a forward bend. I

8. A spring bridge for eyeglasses formed from flat stock and comprising a bridging I portion and two horizontal loops arranged one above the other, formed by widthwise l bends and connected by edgewise bends in the stock.

9. A spring bridge for eyeglasses, formed from flat stock and comprising a bridging portion and two forwardly opening loops arranged one over the other, formed by widthedgewise bends.

10. The combination. with the lens attach ing devices, of a spring bridge formed from flat stock and comprising a bridging portion, a horizontal loop arranged at each end of the bridging portion above the proximate lens attaching device and formed b widthwise bends of the stock, and a horizontal loop ranged below each lens attachin device and connected to an upper' loop bends. i

11. The combination with the lens attaching devices, of a spring bridge formed with horizontal loops arranged beneath the lens attaching devices and loops passing about the lens attaching devices.

ing devices having vertical seats, of a spring bridge having a pair of forwardly opening horizontal. loops at each end of its bridging portion, one arranged above and the other inner arm of each lower loop and secured within a vertical seat. GUSTAV A. BADER.

Witnesses:

HAROLD H. SIMMs, RUSSELL B. GRIFFITH.

wise bends in the stock and connected by y edgewise 12. The combination with the lens att acl 1' elow each lens attaching device, and an at- .tacliing arm projecting upwardly from the v formed by widthwise bends of the stock, 2117- 

